Preheat oven to 350°.,Beat 4 ounces of cream cheese and onions until blended.,Save for topping.,______,Add eggs one at a time, mixing well.,Warm tortillas in lightly oiled skillet.,Place 2 tablespoons of Cheddar mixture on each tortilla.,Roll up.,Place in a 13 x 9-inch baking pan.,Top with enchilada sauce and remaining cheeses.,Bake 20 minutes.,Top with cream cheese mixture and olives.